Logging-jack.



PATENTED AUG. 11. 1903.

J. G. OWEN.

LOGGING JAGK.

APPLIUATION FILED FEB. 26, 1903.

NO MODEL:

UNITED STATES Iatented August 11, 19631 JAMES G. OWEN, OF SOUTHBEND,WASHINGTON;

LOGGING-JACK.

SPECIFICATION forming part of Letters Patent No- 735,897, dated August11, 1903. Application filed February 26, 1903. Serial No. 145,275. onmodel.)

1'0 00% w/wm it may concern:

Beit known that LJAMES G. OWEN,a citizen of the United States, residingat Southbend, in the county of Pacific and State of VVashington, haveinvented certain new and useful Improvements in Logging-Jacks; and Idodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same. i

My invention relates to improvements in logging-jacks; and it consistsin the construction and combination of devices hereinafter described andclaimed.

The object of my invention is to provide a new and improved jack whichis simple and durable in construction, is efficient in operation, andespecially designed forconv'eniently handling logs without danger to theworkman. In the accompanying drawings, Figure 1 is a side elevation of alogging-jack embodying my improvements. 2 is a similar view a detailelevation showing the inner side of the upper portion of one of thestandard-see tions and also showing thelever employed to disengage thedetent-dog from the ratchetwheel. Fig. 8 is a detail perspective view ofthe bridge-piece. Fig. 9 is an inverted plan view of the cap. Fig. 10 isa detail perspective View of one of the plates forming the inner end ofthe lever which carries the ratchetwheel-engaging dog. Fig. 11 is adetailelevation showing the inner side of the housingplate. In theembodiment of my invention I provide a standard 1, which is composed ofthe sections 2 3, each of which is a casting. Each of the said sectionsis provided at its lower end with an outwardly-extending base-flange 4and with an outwardly-extending reinforcing-bracket 5, disposed in theangle between the outer side of the section and the said basethe saidbolts.

flange. The section 2 is provided on its in-' ner side at its rearportion with a flange 6, the width of which is slightly in excess ofthethickness of the rack-bar 7, which operates in the groove or opening8 formed by the flange 6 between the sections 2 3 of the standard. Thesaid flange 6 is here shown as hollow and comprising parallel bars 9,connected together at suitable points by cross-webs 10. By thisconstruction of the flange 6 an economy of material is effected in theconstruction of the section 2, and the weight of the latter iscorrespondingly reduced. The flange 6 of the section 2 extends to withina suitable distance formed with an annular recess 11 on its inner sideat a suitable distance above the flange 6 and is also formed or providedwith a circular opening 12, concentrically disposed with relation to thesaid recess, and the said section 2 is formed on its outer side with abearing-boss 13. The said section 2 is formed with a flange 14 at itsupper end, on its inner side, disposed with one side in the same planeas the inner side of the flange 6. Said sec tion 2 has a lateralextension 15 at its upper end, which is semicircular in form and is pro=vided at its rear edge, on its under side, with a segmental flange 16,the depth of which is coextensive with that of the flange 6'. Thesection 3 is a plate which corresponds in shape externally with thesection 2 and is adapted to match the same, and said sections 2 3 haveat their upper ends horizontallydisposed bearing edges 17, at the innerends of which are shoulders 18. The said section 2 is further providedon its outer sides at its rear edge and at a suitable distance from itsupper end with an outwardly-extending lug 19.

Said sections 2 3 may be clamped together by means of bolts 20, saidsections being provided with matched openings 21 for the reception ofThe section 3 is provided on its outer side at a suitable distance fromits upper end with an outstanding supportingbracket 22, which comprisesa flange or shelf 23 and a strengthening-rib 24. Said flange 23 extendsacross the section 3.

The lower ends of the sections 2 3 when the same are bolted together toform the standard bear on a base 25, which is also a casting and ishollow on its under side, as shown, to reduce its weight and effect aneconomy of material. The said base is secured to the base-flanges 4 ofthe sections 2 3 by bolts 26.

The housing-plate 27, which is similar in shape to the upper portion ofthe section 3, is formed with a base-flange 28, that projects laterallyfrom its inner side at its lower end, and with a flange 29, whichextends a suitable distance upwardly at its rear side. Saidhousing-plate has a bearing-boss 30, which is similar to that on thesection 2, and the section 3 is provided near its upper end with anopening 31 of suitable size and which registers with the bearing-openingin the section 2 and housing-plate 27 Said housing-plate 27 has ashoulder 18 which corresponds with the shoulders 18 of the sections 2 3.

The shaft 32 has its bearings in the openings 12 31. On the said shaftis a pinion 33, which is fixed to the said shaft and engages therack-bar 7. Said pinion has hub-flanges 34 35, which operate,respectively, in the recess 11 of the section 2 and in the opening 31 ofthe section 3. That portion of the shaft 32 which extends across thespace between the section 3 and the housing-plate 27 is angular incross-section, as at 36, and fits in a correspondingly-sh aped openingin the center of a ratchet-wheel 37. The latter is provided on oppositesides with hub-flanges 38, which engage openings 39 near the inner endsof a pair of plates 40 41. Hence the said plates 40 41 are pivot-allymounted on opposite sides of the said ratchet-wheel. The outer portionsof the said plates extend outwardly from between the section 3 and thehousing-plate 27, and the operating-lever 42 has its inner end insertedbetween the outwardly-extending portions of said plates and securedthereto by clamp-bolts 43, said lever and said plates having registeringopenings to receive said bolts.

A detent-dog 44 engages the ratchet-wheel 37 and is provided withtrunnions 45, which have their bearings in openings 46 in the section 3and the housing-plate 27, the said dog being disposed between saidsection and said housing-plate. The operating-dog 47 also engagesratchet-wheel 37 and is provided at points intermediate its ends withtrunnions 48, which have their bearings in openings 49 with which theplates 40 41 are provided. A lever 50 is provided with trunnions 51,which have their bearings in openings 52 in the handle-plates 4O 41. Thesaid lever extends outwardly from between the said plates and under thelever 42 and has an arm 53, which is pivotally connected to a link 54,said link being also pivotally connected to that end of the dog 47 whichis opposite the bill or engaging point thereof. A spring 55 is connectedto the arm 53 and bears against the inner end of the lever 42, thefunction of the said spring being to normally keep the dog 47 inengagement with the ratchet-wheel. The function of the lever 50 and thelink which connects the same to the dog 47 is to enable the latter to bedisengaged from the ratchetwheel at the will of the operator.

One of the trunnions of the dog 44 is provided at its outer end with anangular portion 56, to which is connected a lever 57, which is housedbetween the sections 2 3 and the lower end of which projects downwardlyand in rear of the flange 6. A spring 58 bears between the angular innerend of said lever and the flange 14 of section 2, its function being tokeep the dog 44 normally in engagement with the ratchet-wheel 37 thefunction of the lever 57 being to enable the said dog to be disengagedfrom the said ratchet-wheel at the will of the operator. I

The rack-bar 7, which is operated by the lever and pawl-and-ratchetmechanism hereinbefore described, is provided at its lower end with anoutwardly-extending engaging foot or point 59 and is providedat itsupper end with a stud 60, shoulders 61 being formed by the upper end ofthe said rack-bar at the base of said stud. On the latter may beswiveled a head 62 of any suit-able construction, here shown as providedwith points 63 for engaging the logs. The spaces between the upper endsof the sections 2 3 and the housing-plate 27 are closed by a cap 64.Said cap is a casting having an opening 65 to clear and form a guide forthe rack-bar 7, having depending side flanges 66 67 to bear,respectively, on the outer sides of the section 2 and housing-plate 27at the upper ends thereof, having a depending flange 68 at its rear endto engage the rear side edges of said section 2 and housing-plate 27 atthe upper ends thereof, having a transverse shoulder 69 on its underside near its front end to engage the shoulder 18 with which thesections on the standard and the housing-plate are provided, andprovided, further, on its under side with a depending lock-flange 70,which engages the upper end of the section-plate 3 to prevent the latterfrom springing laterally.

It will be understood that the depending flange and shoulder of the saidcap byengagement with the upper ends of the section 2 and housing-plate27 effectually prevent said cap from shifting its position and greatlyfacilitate the assembling of the parts and their retention inappropriate position while they are being bolted together. The said capis further secured to the upper ends of the section 2 and thehousing-plate 27 by bolts 71, which engage registering openings withwhich the said section 2 and housing-plate are provided.

The housing-plate 27 has alug 19,which corresponds with the lug 19 withwhich the section 2 is provided. The said lugs engage notches 72 in thelower ends of side flanges 73 of a bridge-piece 74, which is employed toclose the spaces between and coact with the cap 64 to form a housing forthe upper ends of the sections 2 3 and plate 27. The upper ends of saidflanges 73 bear under the depending side flanges 66 67 of the cap 64,and said bridgepiece has an upwardly-extending portion 75, which engagesthe inner side of the flange 68 of said cap, and hence an interlockconnection is effected between the latter the section 2, thehousing-plate 27, and the bridge-piece. The bridge-piece is furthersecured to the section 2 and the housing-plate 27 by bolts 76 inopenings with which said section, housingplate, and bridge-piece areprovided. Said bridge-piece is formed in its rear side with a curvedrecess 77, which clears the inner ends of the lever-plates ll.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In a device of the class described ,the combination of a guideelement, a rack-bar, a pin ion engaging the latter, a ratchet-wheelrevoluble with the pinion, an operating-lever having its inner endformed by a pair of plates which are pivoted on the axle of the ratchet-Wheel, an operating-dog having its bearings in said plates, a trip-leveralso having its bearings in said plates and provided with an arm, a linkconnecting said arm to the operating-dog,

and a detent which also engages the ratchet- Wheel, substantially asdescribed.

2. In a device of the class described,the combination of a guideelement, a rack-bar, a pinion engaging the latter, a ratchet-Wheelrevoluble with the pinion, a detent engaging the ratchet-wheel, anoperating-lever having its inner end formed by a pair of plates disposedastride of the ratchet-wheel and pivoted on the axle thereof, anoperating-dog engaging the ratchet-wheel and having its bearings in saidplates, a trip-lever also having its bearings in said plates, andprovided with an arm, a link connecting said arm to the operating-dog,and a spring bearing against the inner end of the operating-lever andconnected to the arm of the trip-lever, substantially as described.

3. In a device of the class described, a standard comprising a pair ofsections detachably secured together, and a housing plate disposed onthe outer side of and detachably secured to one of saidsections, saidelements having laterally-extending flanges spacing them apart,sustantially as described.

4. In a device of the class described, a standard comprising a pair ofsections detachably secured together, one of said sections having on itsouter side a supporting element, and a housing-plate on the outer sideof said section and secured on the said supporting element,substantially as described.

5. In a device of the class described, a standard comprising a pair ofsections detachably secured together, a housing-plate detachably securedto one of said sections, one of the latter and said housing-plate havinglugs on their outer sides, a cap engaging the upper ends of saidsections and housing-plate, and a bridgepiece connecting said sectionsand housingplate together, said bridge piece having notchesengaged bythe lugs, substantially engaging the cap, substantially as described.

7. The combination in a device of the class described, of a standardcomprising a pair of sections detachably secured together and ahousing-plate detachably secured to one of said sections, said sectionsand housing-plate having bearings, a shaft having its bearings in one ofsaid sections and said housing-plate, a pinion on said shaft, aratchet-Wheel detachably secured to said shaft and having hub flanges,and an operating-lever pivoted on said hub-flanges of saidratchet-wheel, substantially as described.

- 8. In a device of the class described, a standard comprising a pair ofsections detachably secured together, a housing-plate detachably securedon the outer side of one of said sec tions, and a cap having dependingflanges engaging the upper ends and bearing on the outer sides of saidsections and housing-plate, and further provided with a depending lugengaging the intermediate section, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JAMES G. OWEN.

WVitnesses:

O. E. HENSON, FRANK A. ANDERSON.

